909
FZNT01 KWBC 171607 CCB
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC SUN AUG 17 2025

CCODE/2:31:04:11:00/AOE+AOW/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH
ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP
(ALL LOWERCASE).

FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).

SECURITE

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1200 UTC AUG 17.
24 HOUR FORECAST VALID 1200 UTC AUG 18.
48 HOUR FORECAST VALID 1200 UTC AUG 19.

.WARNINGS.

...GALE WARNING...
.LOW 40N49W 992 MB MOVING NE 15 KT. WITHIN 240 NM SW...AND
300 NM N AND NW QUADRANTS WINDS 30 TO 45 KT. SEAS 3.5 TO
5.5 M. ELSEWHERE FROM 31N TO 46N BETWEEN 40W AND 56W WINDS
20 TO 30 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW 43N43W 995 MB. WITHIN 240 NM S AND SE
SEMICIRCLES WINDS 30 TO 45 KT. SEAS 4 TO 6 M. ELSEWHERE FROM
38N TO 47N E OF 51W...AND WITHIN 420 NM E AND NE OF A LINE
FROM 31N53W TO 38N41W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW 49N37W 994 MB. WITHIN 240 NM S AND SE
QUADRANTS WINDS 25 TO 40 KT. SEAS 4.5 TO 6.5 M. ELSEWHERE
FROM 41N TO 49N E OF 45W...E OF A LINE FROM 31N47W TO
41N35W...AND FROM 49N TO 56N E OF 47W WINDS 20 TO 30 KT.
SEAS 3 TO 5 M.

...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 60N61W 997 MB MOVING N 20 KT.
FROM 58N TO 64N BETWEEN 53W AND 60W WINDS 25 TO 35 KT. SEAS
3 TO 4.5 M. ELSEWHERE FROM 57N TO 65N W OF 51W WINDS TO 25
KT. SEAS TO 3 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 64N62W 1008
MB. WITHIN 150 NM E AND NE OF A LINE FROM 58N46W TO 59N51W
TO 66N58W WINDS 30 TO 45 KT. SEAS 3.5 TO 5.5 M. ELSEWHERE N
OF 56N BETWEEN 39W AND 58W WINDS 20 TO 30 KT. SEAS 2.5 TO
4 M.
.48 HOUR FORECAST LOW 65N63W 1016 MB. FROM 58N TO 60N
BETWEEN 42W AND 51W WINDS 25 TO 40 KT. SEAS 4 TO 6 M.
ELSEWHERE N OF 56N BETWEEN 37W AND 58W WINDS 20 TO 30 KT.
SEAS 2.5 TO 4 M.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 50N56W 1005 MB. WITHIN 180 NM
NE...AND 900 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS TO
2.5 M.
.48 HOUR FORECAST LOW 49N50W 1001 MB. WITHIN 120 NM SW...
AND 300 NM N AND NW QUADRANTS WINDS 25 TO 35 KT. SEAS 3
TO 4 M. ELSEWHERE WITHIN 480 NM S AND SE...420 NM SW...
AND 540 NM N AND NW QUADRANTS WINDS TO 25 KT. SEAS TO 3
M.

.SYNOPSIS AND FORECAST.

.DENSE FOG WITH VSBY OCCASIONALLY LESS THAN 1 NM FROM 54N
TO 59N BETWEEN 35W AND 40W...AND N OF 64N W OF 60W.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 60N BETWEEN 35W
AND 52W...AND N OF 64N W OF 60W.
.48 HOUR FORECAST DENSE FOG FROM 46N TO 59N BETWEEN 35W
AND 52W...AND N OF 63N W OF 56W.

.FORECASTER MILLS. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA

SYNOPSIS VALID 1200 UTC SUN AUG 17.
24 HOUR FORECAST VALID 1200 UTC MON AUG 18.
48 HOUR FORECAST VALID 1200 UTC TUE AUG 19.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE ERIN NEAR 21.0N 67.4W 946 MB AT 1500 UTC AUG 17
MOVING WNW OR 285 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 110 KT
GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 180 NM NE
QUADRANT...110 NM SE QUADRANT...70 NM SW QUADRANT...AND 150 NM
NW QUADRANT. SEAS 4 M OR GREATER WITHIN 270 NM NE QUADRANT...
180 NM SE QUADRANT...150 NM SW QUADRANT...AND 210 NM NW QUADRANT
WITH SEAS TO 12.5 M. ELSEWHERE WITHIN 24N62W TO 26N66W TO 23N72W
TO 18N68W TO 18N63W TO 20N62W TO 24N62W...INCLUDING IN ATLANTIC
EXPOSURES AND PASSAGES...WINDS 20 TO 33 KT. SEAS 3.0 TO 6.0 M IN
MIXED SWELL. REMAINDER OF AREA WITHIN 26N61W TO 28N69W TO 23N73W
TO 19N68W TO 19N62W TO 21N60W TO 26N61W...INCLUDING IN MONA
PASSAGE AND IN ATLANTIC EXPOSURES AND PASSAGES...WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.5 M IN SE SWELL.
.24 HOUR FORECAST HURRICANE ERIN NEAR 23.1N 70.2W. MAXIMUM
SUSTAINED WINDS 125 KT GUSTS 150 KT. TROPICAL STORM FORCE WINDS
WITHIN 180 NM NE QUADRANT...140 NM SE QUADRANT...120 NM SW
QUADRANT...AND 160 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN
300 NM NE QUADRANT...240 NM SE QUADRANT...150 NM SW QUADRANT AND
270 NM NW QUADRANT WITH SEAS TO 14.0 M. ELSEWHERE WITHIN 26N66W
TO 27N70W TO 25N74W TO 20N72W TO 18N68W TO 23N64W TO 26N66W...
INCLUDING ATLANTIC EXPOSURES...WINDS 20 TO 33 KT. SEAS 2.5 TO
6.0 M IN S TO SW SWELL. REMAINDER OF AREA WITHIN 28N63W TO
31N69W TO 26N77W TO 20N72W TO 20N64W TO 23N62W TO 28N63W...
INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR LESS. SEAS 2.5 TO
4.5 M IN SE TO S SWELL.
.48 HOUR FORECAST HURRICANE ERIN NEAR 25.9N 72.2W. MAXIMUM
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS
WITHIN 180 NM E SEMICIRCLE...150 NM SW QUADRANT AND 170 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 330 NM NE QUADRANT...270 NM
SE QUADRANT...210 NM SW QUADRANT...AND 360 NM NW QUADRANT WITH
SEAS TO 16.5 M. ELSEWHERE WITHIN 28N66W TO 30N73W TO 27N76W TO
22N73W TO 22N68W TO 25N65W TO 28N66W...INCLUDING ATLANTIC
EXPOSURES...WINDS 20 TO 33 KT. SEAS 3.5 TO 8.0 M IN S TO SW
SWELL. REMAINDER OF AREA WITHIN 31N62W TO 29N68W TO 31N81W TO
23N75W TO 20N68W TO 26N63W TO 31N62W...INCLUDING ATLANTIC
EXPOSURES...WINDS 20 KT OR LESS. SEAS 2.5 TO 5.0 M IN S SWELL.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.ATLC 09 HOUR FORECAST WITHIN 31N47W TO 31N49.5W TO 31N47W WINDS
20 KT OR LESS. SEAS 2.5 M IN W TO NW SWELL.
.24 HOUR FORECAST WITHIN 31N44.5W TO 31N50.5W TO 30.5N49W TO
30.5N46.5W TO 31N44.5W WINDS 20 KT OR LESS. SEAS 2.5 M IN NW TO N
SWELL.
.48 HOUR FORECAST WITHIN 31N43W TO 31N44W TO 31N43W WINDS 20 KT
OR LESS. SEAS 2.5 M IN NW TO N SWELL.

.ATLC 36 HOUR FORECAST WITHIN 19N35W TO 18.5N36W TO 17N36W TO
16.5N35.5W TO 16N35W TO 19N35W WINDS 20 KT OR LESS. SEAS 2.5 M
IN NE TO E SWELL.
.48 HOUR FORECAST WITHIN 19N35W TO 20N38W TO 18N39W TO 17N39W TO
16N38W TO 16N35W TO 19N35W WINDS 20 KT OR LESS. SEAS 2.5 M IN NE
TO E SWELL.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.